| Abstract | The bright cluster discovered in NGC 5128 satisfies the general relation between the magnitudes of the brightest cluster and of the spheroidal component in galaxies. If this bright cluster is the brightest in NGC 5128 its correct apparent magnitude (about 17.7) and the corrected total magnitude of the galaxy (about 7.3) imply a value of -20.1 for the absolute magnitude of the galaxy, -9.7 for the cluster, and a corrected distance modulus of 27.37, which is in good agreement with the modulus (27.6) previously derived from redshift and membership in the Centaurus group. The presence of this apparently normal cluster near the top of the luminosity function suggests that if the cluster population is normal, half the cluster population should be brighter than apparent magnitude B = 21.5, in seeming contradiction with the negative results of previous searches. |
